01059nam0-2200289---450-99000882145040332120090310124504.0000882145FED01000882145(Aleph)000882145FED0100088214520090310d2002----km-y0itay50------baenga-------101yySymposium on power electronics, electrical drives, automation & motionproceedingsSPEEDAM 2002june, 11th - 14th 2002, Ravello (Italy)[s.l.s.n.]stampa 2002NapoliLitografia Libero Nicola1 v. (paginaz. varia)ill.30 cmMotori elettriciCongressi621.47Symposium on power electronics, electrical drives, automation & motion<2002 ;Ravello, Italy>505018ITUNINARICAUNIMARCBK99000882145040332110 PRO 509DIEL 2964DINELDINELSymposium on power electronics, electrical drives, automation & motion807047UNINA01437nam 2200409 450 991070562740332120170524155320.0(CKB)5470000002452125(OCoLC)987960698(EXLCZ)99547000000245212520170524d2016 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierFolklife and fieldwork an introduction to cultural documentation /by Stephen Winick and Peter Bartis ; with contributions by Nancy Groce, Margaret Kruesi, and Guha ShankarFourth edition.Washington, D.C. :American Folklife Center, Library of Congress,2016.1 online resource (v, 39 pages) color illustrationsPublications of the American Folklife Center ;no. 3Subtitle has changed for each revision.Folklife and fieldwork FolkloreFieldworkOral historyUnited StatesSocial life and customsResearchFolkloreFieldwork.Oral history.Winick Stephen D.1968-912276Bartis Peter1949-2017,American Folklife Center,GPOGPOBOOK9910705627403321Folklife and fieldwork3490939UNINA05690nam 2200709 450 991082028680332120230803031911.01-118-57946-11-118-57915-11-118-57949-6(CKB)2670000000494156(EBL)1575623(SSID)ssj0001173132(PQKBManifestationID)11673342(PQKBTitleCode)TC0001173132(PQKBWorkID)11209233(PQKB)11587368(MiAaPQ)EBC1575623(Au-PeEL)EBL1575623(CaPaEBR)ebr10814705(CaONFJC)MIL550373(OCoLC)865333402(EXLCZ)99267000000049415620131221d2013 uy 0engur|n|---|||||txtccrElectromagnetic wave scattering from random rough surfaces asymptotic models /Nicolas Pinel, Christophe BourlierLondon ;Hoboken, New Jersey :ISTE :Wiley,2013.©20131 online resource (162 p.)Focus SeriesDescription based upon print version of record.1-84821-471-5 Includes bibliographical references and index.Cover; Title Page; Contents; Preface; Introduction; CHAPTER 1. ELECTROMAGNETIC WAVE SCATTERING FROM RANDOM ROUGH SURFACES: BASICS; 1.1. Introduction; 1.2. Generalities; 1.2.1. Maxwell equations and boundary conditions; 1.2.2. Propagation of a plane wave (Helmholtz equation and plane wave); 1.2.3. Incident wave at an interface: polarization; 1.3. Random rough surfaces: statistical description and electromagneticroughness; 1.3.1. Statistical description of random rough surfaces; 1.3.2. Specific case of sea surfaces; 1.3.3. Electromagnetic roughness and Rayleigh roughness criterion1.4. Scattering of electromagnetic waves from rough surfaces: basics1.4.1. Presentation of the problem (2D/3D); 1.4.2. Huygens' principle and extinction theorem; 1.4.3. Green functions (2D/3D); 1.4.4. Scattered powers and scattering coefficients; CHAPTER 2. DERIVATION OF THE SCATTERED FIELD UNDER ASYMPTOTIC MODELS; 2.1. Bibliography on existing models; 2.1.1. Introduction; 2.1.2. Rigorous models; 2.1.3. Asymptotic models; 2.1.4. General properties of scattering; 2.1.5. A few details on the KA and the GO; 2.2. Scattering in reflection and transmission under the KA with shadowing effect2.2.1. KA in reflection and transmission with shadowing effect for 2D problems2.2.2. Extension of the KA model to 3D problems; 2.3. Scattering in reflection for 3D problems under various asymptotic models; 2.3.1. Context and specific notations; 2.3.2. The small perturbation model; 2.3.3. The Kirchhoff approximation-high-frequency regime; 2.3.4. The weighted curvature approximation; 2.3.5. The small slope approximation; 2.3.6. The local curvature approximation; 2.3.7. The resonant curvature approximation; 2.3.8. Validation of the different asymptotic numerical models for 2D problemsCHAPTER 3. DERIVATION OF THE NORMALIZED RADAR CROSS-SECTION UNDER ASYMPTOTIC MODELS3.1. Derivation of incoherent normalized radar cross-section under the GO for 2D problems; 3.1.1. Incoherent NRCS under the GO with shadowing effect for 2D problems; 3.1.2. Calculation of the bistatic shadowing functions in reflection and transmission; 3.2. General properties and energy conservation of the GO for 2D problems; 3.2.1. General properties of the GO for 2D problems; 3.2.2. Study of energy conservation under the GO for 2D problems3.3. Scattering coefficients under the GO with shadowing effect for 3D problems3.4. Energy conservation of the GO model for 3D problems; 3.4.1. Case of a perfectly conducting lower medium; 3.4.2. Case of a lossless dielectric lower medium; 3.5. Scattering in reflection for 3D problems under various asymptotic models; 3.5.1. Expression of the NRCS under the SPM1; 3.5.2. Expression of the NRCS under the GO; 3.5.3. Expression of the NRCS under the SSA; 3.5.4. Validation and comparison of the different asymptotic analytical models for 2D problems3.5.5. Comparison between numerical and analytical asymptotic models for 3D problemsElectromagnetic wave scattering from random rough surfaces is an active, interdisciplinary area of research with myriad practical applications in fields such as optics, acoustics, geoscience and remote sensing.Focusing on the case of random rough surfaces, this book presents classical asymptotic models used to describe electromagnetic wave scattering. The authors begin by outlining the basic concepts relevant to the topic before moving on to look at the derivation of the scattered field under asymptotic models, based on the Kirchhoff-tangent plane, in order to calculate both the scattereFocus series in waves.Boundary value problemsElectromagnetic wavesScatteringMathematical modelsSurfaces (Physics)Mathematical modelsBoundary value problems.Electromagnetic wavesScatteringMathematical models.Surfaces (Physics)Mathematical models.515.35Pinel Nicolás1710908Bourlier Christophe859622International Society for Technology in Education,MiAaPQMiAaPQMiAaPQBOOK9910820286803321Electromagnetic wave scattering from random rough surfaces4101850UNINA